Bath drain shoe and plug



July 23, 1968 w. E POLITZ 3,393,409

. BATH DRAIN SHOE AND PLUG Filed Nov. 3, 1965 5 INVENTOR. F i 5 1 /9 W E POL-[T2 g. BY as I a United States Patent 3,393,409 "BATH DRAIN SHOE AND PLUG William E. Politz, Delphi, Ind., assignor to Stephen A. Young, Monticello, Ind. Filed Nov. 5, 1965, Ser. No. 506,565 3 Claims. (Cl. 4-191) ABSTRACT OF THE DISCLOSURE This invention is directed to an improved form of Waste plug for use with waste and ovenflow fixtures in bath tubs primarily, which plug comprises a two-piece unit having means to centralize the parts in a bath drain outlet and to eliminate the necessity to have large threads on the outside of a plug member which are made with corresponding threads in a shoe'member, facilitating the installation of a unit of this kind by one man since the interengagement of the respective parts to prevent leakage is eifected by a pair of screws guiding interengagement of the parts being provided by the formation thereof.

This invention relates to bath drains and particularly to the drain shoe and plug construction therein, involving an improvement in the manufacture and reduction in cost as well as making possible simpler installation.

In the usual bath drain construction, the shoe at the end thereof, that is the end of the waste arm, is provided with threads interiorly of the opening which is intended to be positioned opposite the drain outlet of the tub, in which a threaded plug or shoe plug may be inserted, from the upper portion and through the said drain opening, manipulation of the plug as by rotation in threading, drawing the shoe and plug together and sealingly closing the outlet providing for passage of water therethrough without leakage.

One of the objections to this type of construction is the fact that it requires precise positioning of the various parts to effect proper threading connection and as will be understood this will often require the services of two workmen to effect because one workman will be required to hold the shoe in position while the other one manipulates the plug as least until the threads are initially engaged.

Additionally if there is requirement for replacement of the various parts, the threads are usually so corroded and interengaged that it is almost impossible to remove the plug without destruction of one or the other parts and thus a diflic'ult station is provided which requires usually replacement of the entire waste shoe for whatever purpose.

It is therefore a principal object of this invention to provide drain shoe and plug construction which obviates the objections inherent in the former constructions as suggested by the problems outlined hereinabove.

It is a further object of this invention to provide drain shoe and plug construction which facilitates the joining of the two parts and makes possible such joining without added labor, at the same time making manufacture of the parts less expensive and replacement and renewal of the parts feasible in any event.

Another object of the invention is to provide drain shoe and plug construction which will make the installation of such elements very rapid since the tools required will be minimized as to their number and further the possibility of doing damage with the tools as heretofore has been the case is likewise obviated.

Other and further objects of the invention will be understood from a consideration of the specification appended hereto and disclosed in the drawing wherein:

FIGURE 1 is a fragmentary view in elevation, illustrating the bath drain in general and the relationship to a bath tub with the sectional portion disclosing that phase of the construction which is improved hereby. 1

FIGURE 2 is an enlarged fragmentary sectionalview showing the drain shoe and plug in connected relation and positioned in the tub outlet. I

FIGURE 3 is a view taken at 90 from FIGURE 2 further illustrating the construction of the shoe and plug.

FIGURE 4 is a top view of the shoe by itself.

FIGURE 5 is a sectional view taken on a line 5-5 of FIGURE 4 looking in the direction of the arrows.

FIGURE 6 is a plan view of the plug.

FIGURE 7 is a side elevational view of the plug illustrating the guide slots therein.

Referring to FIGURE 1, a bath drain of generally conventional construction is illustrated, being of the trip lever type, as mounted on a tub shown in dotted lines at 1, and including a drain or waste T 2 from which extends upwardly the overflow arm 3 at the upper end of which is an overflow head 4.

The overflow head is connected to the overflow outlet by means of the usual faceplate 5 and associated parts, and at the lower end of the drain T 2 is the drain outlet to the sewer denoted 6.

Extending at right angles to the overflow arm 3', is the waste arm 7 at the outer extremity of which is positioned the waste shoe 8 which is threadedly engaged as indicated at 9 in FIGURE 2 with the arm 7 having corresponding threads 10 therein.

The shoe 8 provides a right angle elbow, at the upper extremity of which is a flange 11, the shoe 8 usually being a casting of some kind or even a forging in which the flange 11 is an integral part thereof.

The shoe 8 is further provided with a pair of bosses 12 and 13 the boss 12 being shown in both FIGURES 2 I and 3 as comprising a vertically extending protuberance extending both interiorly of and exteriorly of the shoe itself, with threads 14 and 15 vertically therewithin.

It will be noted in FIGURE 3 that the threads and the opening in which they are positioned, extend as to the threads 15 down through the boss so that in manufacture the drilling and tapping operation may be effected without bottoming the drill or tap in the hole. This simplifies the manufacture and is contrasted with the boss 12 and threads 14 therewithin which are formed as by bottoming the drill and tap.

Interiorly of the shoe '8, is a cylindrical section 16, which extends at right angles to the arm 7 and is arranged to provide an opening through which the drainage from the tub may be carried away.

The opening 16 is intended to be arranged opposite the opening 17 formed in the tub at the bottom thereof, which opening is further formed so as to receive the plug 18 therein, the plug 18 comprising a cylindrical portion 19 through the interior of which in the opening 20 the 'water or drainage may flow, the upper end of the cylindrical portion having the flange 21 arranged peripherally thereon, the flange 21 seating on the surface 22 which terminates at the drain outlet 17 as indicated.

The plug 1 8 as indicated in FIGURES 6 and 7 includes the openings 23 and 24 therein extending downwardly and positioned so as to correspond in spacing being diametrically opposed, with the threaded openings 14 and 15 previously referred to. The openings 23 and 24 further terminate at their upper extremities in beveled surfaces 23a and 24a respectively so as to receive the corresponding beveled surface of the screws 25- and 26, these screws having the same threads as the openings 14 and 15 respectively so that assembly may be effected to place the parts in the position of FIGURE 3 and by appropriately drawing down on the screws 25 and 26 compel the sealing of the opening 17 so that the drain from the tub will pass through the interior of the plug 18 and out into the arm 7 as is commonly desired.

A suitable seal or gasket 30 is preferably provided so that when the plug 18 is drawn down by manipulating the screws 25 and 26, the flange 11 on the shoe 8 will sealingly engage both the underside of the tub I and the flange 11 leakage being thereby prevented. 'I he gasket 30 is provided with openings 31 therein through which the screws 25 and 26 pass and in the instance of the screw 26, the gasket opening therein is of such nature as to closely engage the threads of the screw and prevent any leakage through the opening 15 as might otherwise occur.

Since it is desirable to prevent any large objects from passing into the drain, a suitable strainer such as 32 is provided, to be positioned as indicated in FIGURES 2 and 3 over the flange 21 and opening 20 in the plug 18 and therefore a crosspiece 33 is provided and since the plug 18 will usually be a casting or a comparable member the said crosspiece 33 will be integral therewith.

Centrally of the crosspiece 33 is a threaded opening 34 in which a suitable screw such as 35 may be entered likewise engaging with the strainer 32 at the mating section 36 thereof.

In order to position the openings 23 and 24 opposite the openings 14 and 15, as would be necessary to quickly introduce the screws 25 and 26, for tightening as previously outlined, the plug 18 is provided with slots as illustrated in FIGURE 7 denoted 37, these slots being oppositely disposed and adapted to interengage' with the bosses 12 and 13 interiorly of the shoe 8. The slots 37 are of course diametrically opposed and thereby will meet with the bosses 12 and 13 readily and guide as well as position the parts in their interconnecting operation.

Assembly of the plug and shoe will be apparent from the foregoing involving as it does merely positioning the cylindrical opening 16 in the shoe beneath the opening 17 in the tub, thereafter introducing the plug 18 as by its cylindrical section 19 engaging the cylindrical section 16, and subsequently inserting the screws 25 and 26 in the openings 14 and 15 respectively.

Drawing down upon the screws 25 and 26, will cause the seal or gasket 30 to be appropriately tightened, this having obviously been preliminarily inserted in position, and thereafter the strainer 32 may be installed by appropriately introducing the screw 35 into the opening 34 provided therefor.

It will be apparent thus that a very Simple installation is effected, the threading upon the cylindrical surface 19 and in the cylindrical section 16 being eliminated as commonly is the case, these being threads which are of large diameter and somewhat critical as to size if properly constructed.

I claim:

1. In bath drain construction of the class described, in combination, a drain T, a waste arm extending therefrom, a waste shoe at the end of said arm for positioning at a bath tub drain outlet, a plug slidingly engaging said shoe at such outlet, means to position said plug with respect to the shoe and tub including a pair of spaced screws extending from the plug through such outlet into threaded engagement with the shoe, the shoe includes a flange at the upper portion thereof for positioning beneath such tub at the drain outlet, the plug likewise includes a flange for positioning above the tub, the screws extend through both said flanges to draw the same toward one another, and means to position the flanges with respect to one another whereby the screws are readily interengaged with the respective parts comprising a cylindrical opening in the shoe, a pair of vertically positioned bosses in said opening, and a mating cylindrical portion on the plug positioned in said opening, said portion having vertically extending slots in which the bosses are received.

2. In bath drain construction of the class described, in combination, a drain T, a waste arm extending therefrom, a waste shoe at the end of said arm for positioning at a bath tub drain outlet, a plug slidingly engaging said shoe internally at such outlet, means to position said plug with respect to the shoe and tub including a pair of spaced screws extending from the plug and through such outlet into threaded engagement with the shoe, the shoe includes a cylindrical opening extending therein, a pair of bosses extend inwardly in said opening and vertically therealong and have threaded openings therein, the screws are threaded into the openings in the said bosses to provide the threaded engagement, and the plug comprises a downwardly extending mating cylindrical portion, said portion having slots to receive the bosses.

3. The combination as claimed in claim 2, wherein the plug includes a flange at the upper end thereof, a crosspiece extends across the cylindrical portion, a strainer is seated on the flange, and a screw engages the strainer and crosspiece to maintain the former on said flange.

References Cited UNITED STATES PATENTS 1,875,764 9/1932 Rosewood 4199 FOREIGN PATENTS 42,560 5/1933 France.

(Addition to No. 728,530)

HAROLD J. GROSS, Primary Examiner. 

